Hi! Hope you find the right van. We bought a used single axle Pageant S6 last year and it’s been great. We like the fixed bed, it’s a good 2 person van. Ours has no known damp. Expect to fix a good few smaller items if you bring a van of this age into regular use, ours was a very good example I think but was probably so good because it had had light use. Its had a new skylight due to cracking at the hinge side, dealer warranty paid for that, plastic doesn’t survive so well in the sun always. Check skylights if buying privately would be expensive parts. The window stay locks are crumbling, we have a few of those to replace, again 15 yo plastic issues. Water pump failed and water intake o rings needed replacing, I’ve fitted a new pump. The heating hot water and fridge have been fine. I’ve replaced the crap old Bailey radio with something modern. I also dumped the Status TV antenna, replaced its TV function with a Cell/Wifi antenna and a DAB antenna that was fitted at the same site. Lightbulbs are all easy to replace with LED. Check age of tyres. Basically check that everything works, including heating and HW on gas and electric. I’d expect to do some DIY on an older van, I guess they are not for those who need a dealer every time a window catch falls apart,
Steve